Very true. Problem is, AIO will strip SG (right?), so you can't layer SG by doing that, although I would rather go that way, too. Three more coats or so, and then I'm gonna top with P21S and use that whenever it needs it.
I'm still a little worried about whether the AIO I used a few weeks ago really did strip the wax I had on the car... I'm sure it did, but because it left the surface feeling like it was waxed, I got all worried about that. :bounce